Messages in this thread Patch in this message | | | From | Jiasheng Jiang <> | Subject | [PATCH] fsi: core: Check error number after calling ida_simple_get | Date | Tue, 11 Jan 2022 15:34:11 +0800 |
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If allocation fails, the ida_simple_get() will return error number. So master->idx could be error number and be used in dev_set_name(). Therefore, it should be better to check it and return error if fails, like the ida_simple_get() in __fsi_get_new_minor().
Fixes: 09aecfab93b8 ("drivers/fsi: Add fsi master definition") Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> --- drivers/fsi/fsi-core.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c index 59ddc9fd5bca..92e6eebd1851 100644 --- a/drivers/fsi/fsi-core.c +++ b/drivers/fsi/fsi-core.c @@ -1309,6 +1309,9 @@ int fsi_master_register(struct fsi_master *master) mutex_init(&master->scan_lock); master->idx = ida_simple_get(&master_ida, 0, INT_MAX, GFP_KERNEL); + if (master->idx < 0) + return master->idx; + dev_set_name(&master->dev, "fsi%d", master->idx); master->dev.class = &fsi_master_class; -- 2.25.1
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